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What colour is sodium hydroxide when you add universal indicator?
When you add universal indicator to sodium hydroxide, it will typically turn purple or dark blue in color, indicating that the solution is strongly alkaline.
Copper sulphate add to sodium hydroxide result colour?
When copper sulfate is added to sodium hydroxide, a blue precipitate of copper hydroxide is formed. The color change observed is from the initial blue color of copper sulfate to the blue precipitate of copper hydroxide.
When do you add sodium hydroxide into the conical flask containing the analgesic?
Sodium hydroxide is typically added slowly to the conical flask containing the analgesic after the analgesic has been dissolved in a solvent like ethanol. The sodium hydroxide solution is added drop by drop while stirring to form a clear solution, indicating the completion of the reaction.
How do you distinguish sodium hydroxide and sodium acetate?
To test presence of Sodium ions, do a flame test: color observed: golden yellow. To test presence of carbonate or hydrogen carbonate ions: Take some of the sodium hydrogen carbonate in a dry test tube. Heat the test tube and bubble the gas through limewater. Limewater turns milky. Carbonate or hydrogen carbonate ions present. To distinguish between carbonate and hydrogen carbonate: Add indicator solution. If colour of solution turns green, pH is 7-8, hydrogen carbonate ions are present. If colour of solution turns blue, pH is 12-13, carbonate ions are present. -Iberuz
What happen if you add the copper sulphate to sodium hydroxide?
If you add copper sulfate to sodium hydroxide, a double displacement reaction will occur. The copper sulfate will react with the sodium hydroxide to form copper hydroxide, which is a blue solid, and sodium sulfate, which is a soluble compound. This reaction is often used in qualitative analysis to test for the presence of copper ions.
What colour is sodium hydroxide when you add universal indicator?
When you add universal indicator to sodium hydroxide, it will typically turn purple or dark blue in color, indicating that the solution is strongly alkaline.
Copper sulphate add to sodium hydroxide result colour?
When copper sulfate is added to sodium hydroxide, a blue precipitate of copper hydroxide is formed. The color change observed is from the initial blue color of copper sulfate to the blue precipitate of copper hydroxide.
When do you add sodium hydroxide into the conical flask containing the analgesic?
Sodium hydroxide is typically added slowly to the conical flask containing the analgesic after the analgesic has been dissolved in a solvent like ethanol. The sodium hydroxide solution is added drop by drop while stirring to form a clear solution, indicating the completion of the reaction.
How do you distinguish sodium hydroxide and sodium acetate?
To test presence of Sodium ions, do a flame test: color observed: golden yellow. To test presence of carbonate or hydrogen carbonate ions: Take some of the sodium hydrogen carbonate in a dry test tube. Heat the test tube and bubble the gas through limewater. Limewater turns milky. Carbonate or hydrogen carbonate ions present. To distinguish between carbonate and hydrogen carbonate: Add indicator solution. If colour of solution turns green, pH is 7-8, hydrogen carbonate ions are present. If colour of solution turns blue, pH is 12-13, carbonate ions are present. -Iberuz
What happen if you add the copper sulphate to sodium hydroxide?
If you add copper sulfate to sodium hydroxide, a double displacement reaction will occur. The copper sulfate will react with the sodium hydroxide to form copper hydroxide, which is a blue solid, and sodium sulfate, which is a soluble compound. This reaction is often used in qualitative analysis to test for the presence of copper ions.
What do you add to sodium hydroxide to get pH lower?
Acid
Can i add sodium bicarbonate to sodium hydroxide?
It is not recommended to add sodium bicarbonate (baking soda) to sodium hydroxide as it can cause a reaction that releases carbon dioxide gas. This reaction can be exothermic and may cause splattering of the solution. It is safer to add these chemicals separately to your desired solution.
How do you make a 5 percent water solution of sodium hydroxide?
To make a 5% water solution of sodium hydroxide, you would mix 5 grams of sodium hydroxide with 95 grams of water. This will give you a total of 100 grams of solution, with 5% of it being sodium hydroxide. Remember to always add the sodium hydroxide to the water slowly and with caution due to its caustic nature.
What is the reaction of sodium hydroxide and sodium bisulfite?
There will not be any reaction .Both will remain togather in mixed form i.e.Na+ OH- and HSO3 ions in aquaeous solution Dr. Pradhan As a matter of fact there will be a reaction. Sodium Bisulfite (Sodium Hydrogen Sulfite) is a weak acid and Sodium Hydroxide is a Strong Base. Sodium Hydroxide will convert the Sodium Bisulfite to Sodium Sulfite (Na2SO3). You can actually see the reaction take place as Bisulfite generally has a yellow tinge to it, when you add NaOH the yellow tinge disappears and the solution turns clear and colorless. Chris D.
How can you effectively dilute sodium hydroxide for safe handling and use?
To effectively dilute sodium hydroxide for safe handling and use, slowly add the sodium hydroxide to water while stirring constantly. Do not add water to sodium hydroxide as it can cause a violent reaction. Wear appropriate protective gear, such as gloves and goggles, and work in a well-ventilated area to prevent exposure to fumes.
What are the steps to do the biuret test?
1) Add 2cm3 of solution to be tested to a test-tube. 2) Add an equal volume of 5% potassium hydroxide* solution and mix. 3) Add 2 drops of 1% copper sulphate solution and mix. A mauve or purple colour develops if protein is present. *Sodium hydroxide solution can be used instead of potassium hydroxide solution.
Can I lower the pH of sodium hydroxide with water?
No, adding water to sodium hydroxide will not lower the pH. Sodium hydroxide is a strong base, and when dissolved in water, it dissociates to produce hydroxide ions, which make the solution more basic. To lower the pH of a sodium hydroxide solution, you would need to add an acid to neutralize the base.
